CN105577845A - Method for operating a sensor arrangement with multiple sensor devices - Google Patents
Method for operating a sensor arrangement with multiple sensor devices Download PDFInfo
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- CN105577845A CN105577845A CN201510742305.4A CN201510742305A CN105577845A CN 105577845 A CN105577845 A CN 105577845A CN 201510742305 A CN201510742305 A CN 201510742305A CN 105577845 A CN105577845 A CN 105577845A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5038—Address allocation for local use, e.g. in LAN or USB networks, or in a controller area network [CAN]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40143—Bus networks involving priority mechanisms
- H04L12/4015—Bus networks involving priority mechanisms by scheduling the transmission of messages at the communication node
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/407—Bus networks with decentralised control
- H04L12/417—Bus networks with decentralised control with deterministic access, e.g. token passing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/30—Arrangements in telecontrol or telemetry systems using a wired architecture
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/18—Network protocols supporting networked applications, e.g. including control of end-device applications over a network
Abstract
The invention relates to a method for operating a sensor device (2) in a sensor arrangement (3) including multiple sensors interconnected by a common communication line (7), comprising the steps of: - serially transmitting data on the communication line (7), wherein data are transmitted on the communication line (7) by applying a sequence of electrical levels, wherein the electrical levels include one dominant level and one or more subdominant levels, wherein only the dominant level is capable of overriding subdominant levels on the communication line (7); - monitoring the communication line (7); and - interrupting the transmission of data and/or blocking the transmission of data, in case a dominant level exists on the communication line (7) which has not been applied by the sensor device (2).
Description
Technical field
The present invention relates to the sensor arrangement with multiple sensor device, and in particular to operation, there is the method for the sensor arrangement of multiple sensor device.
Background technology
Sensor device is widely used in control & monitor production equipment, and such as, for measuring distance, calculating unit, sense temperature, detects color etc.But sensor device usually has limited sensing range, therefore for the needs of practical application, usually application comprises sensor arrangement or the sensor array of multiple sensor device.
In order to cover the common perception of continuous print, usually become to make their sensing range overlapping by multiple sensor device arrangement.Special for the radiated wave of utilizing emitted light, other kinds or the sensor device of sound wave, because when running at the same time, adjacent sensor device may disturb, so be not being met about the requirement of minimum range between interval and transducer.
In order to avoid such interference, the multiple sensor devices be in sensor arrangement run in a synchronous manner.The sensor device be generally in sensor arrangement provides multi-channel running, with the perception task making these sensor devices continue to carry out them according to predetermined activation sequence.It is known that the order of measurement that sensor device performs them depends on parameter, the such as position of transducer in sensor arrangement and quantity.Need to preset these parameters in each in these sensor devices.
In addition, such as, know from file DE10240832A1 and DE102010041810A1, derive the operation order of multiple sensor device according to serial number.Serial number identifies the identity of each sensor device, and is stored in wherein.In addition, the known sensor device coupled by synchronizing channel in sensor array, described synchronizing channel allows communication optionally to make interconnective sensor device activate and to stop using.
In addition, it is known that, the activation sequence of multiple sensor device can be determined by Random Waiting Time at first, and then each sensor device manages to occupy a call duration time groove to identify itself identity in sensor arrangement, thus can record its round in activation sequence.But the duration of such initial method depends on the circulation timei of each sensor device substantially, this makes the maximum duration of such initial method be uncertain.
Especially, counting due to random number is limited, so such situation may be there is, namely, multiple sensor device is held open, and occupies identical call duration time groove, thus they oneself is recorded in activation sequence, this has caused this initial method to pause the longer time, makes the maximum duration accurately can not determining this initial method.But, usually need to force sensor arrangement to meet given ready delay, and said method can not ensure this ready delay.
An object of the present invention is to provide a kind of initial method, wherein the sensor device of sensor arrangement can set up activation sequence in multiplexed operation, without the need to the interaction of user.This activation sequence should be defined and be static, the duration of this initial method should be restricted to lower than given ready delay simultaneously.
Another object of the present invention guarantees easily to be added in sensor arrangement or from sensor arrangement by sensor device at any time to remove, and do not affect the multiplex operation of this sensor arrangement.
Summary of the invention
By in the method operating a sensor device in the sensor arrangement with multiple sensor device with application claims protection, and by described in the present invention sensor device, sensor arrangement and sensing system, realize above-mentioned purpose.
Other embodiments are also described in the present invention.
On the one hand, the invention provides a kind of method for operational sensor device in the sensor arrangement containing interconnective multiple transducer by common communications line, said method comprising the steps of:
-on described communication line, send data continuously, wherein on described communication line, send data by applying sequence of levels, wherein said level comprises an advantage level and one or more advantage level, and wherein only the applying of described advantage level can cover the secondary advantage level on described communication line;
-monitor described communication line; And
-when advantage level be present in not yet by the communication line of this sensor device effect, interrupt described data send and/or stop described data to send.
A theory of the method for aforesaid operations sensor device is, first it allows the activation sequence consulting to be used for multiple sensor device in initialize mode, and secondly it allows only to use single communication line in multiplexed operation, operate described multiple sensor device in measurement mode.By providing the advantage level that can be detected by the sensor device of all connections on described communication line, holding consultation between the sensor device connected and becoming possibility with communicating.
In an initialize mode, identification data can be sent on described communication line further continuously, as the corresponding sequence of described level, wherein said identification data identifies described sensor device uniquely.
The present invention can provide, as long as not yet pass described communication line to send described identification data completely, is then repeated on the step described communication line sending continuously described identification data.
According to an embodiment, in described initialize mode, monitor the transmission completely of each identification data, distribute and store address, such as, carrying out this process by communication control unit, especially, described address is stored together with the information about the order that described communication line occurs.
In addition, in described initialize mode, if do not monitor the transmission of identification data in the given time on described communication line, then can stop described initialize mode, and start measurement pattern.
On the other hand, the invention provides a kind of operation containing by the method for the sensor arrangement of the interconnective multiple transducer of common communications line, each in wherein said sensor device:
-on described communication line, send data continuously, wherein send data by applying sequence of levels on described communication line, wherein said level comprises an advantage level and one or more advantage level, and wherein only the applying of described advantage level can cover the secondary advantage level on described communication line;
-monitor described communication line; And
-not yet by the communication line of this sensor device effect, deposit in case at an advantage level, interrupt described data and send and/or stop described data to send.
In the method for the described sensor arrangement of operation, the present invention can provide, in all the sensors device, place of predetermined starting time particularly after described sensor arrangement is powered, start initialize mode simultaneously, wherein each sensor device starts to send identification data continuously in continuous print time frame, wherein in the sensor each, by the address assignment generated by public address allocative decision to sending the one or more of their respective identification datas completely in described sensor device, wherein distributed address stores together with the information about the order of occurrence during described initialize mode.
In described initialize mode, use the identification code of each sensor device to determine the activation of multiple sensor device in sensor arrangement, to register each in described sensor device and each position when not using Random Waiting Time or relate to any other method of random number further in the described activation sequence of definition securely.Described sensor device such as, is interconnected with the communication line that can carry at least two level (that is, the level of electricity, voltage or electric current), wherein in described level is defined as advantage level.Put on advantage level on described communication line by least one in described sensor device and cover the every other level put on by other sensor devices on described communication line.
For described initialize mode, some sensor devices are interconnected by described communication line, and to make upon actuation, each in described sensor device starts to be sent on described communication line by its identification data continuously simultaneously.Alternately or in addition, each sensor device can be configured to, when secondary advantage level not being put on described communication line owing to there is advantage level on described communication line, any transmission of described identification data is stoped.Result, because each in described sensor device starts to attempt to be sent on described communication line by its identification data in a time frame, so once described identification data needs secondary advantage level to put on described communication line, these sensor devices just will stop the transmission of its identification data, simultaneously in described sensor device other by with itself identify relevant advantage level and put on described communication line.Therefore, only that sensor device with the identification data of the applying sent completely by described communication line just can register the unique address sending the intended level in order of occurrence completely that it has identification data.Described unique address can be generated according to the public address allocative decision identical for all the sensors device in described sensor arrangement.Except those sensor devices be recorded, all the sensors device all repeats the method, until these sensor devices are recorded, and its address is associated.
Method above by the automatic record sensor device applying the position representing order of occurrence in initial method has the advantage without the need to carrying out manual customization to sensor device.Unique identification based on identification data and associated address thereof causes the simplification of automation multi-channel running.The order defined by address is not random, and the maximum duration of described initial method can not be restricted to the interval of consulting needed for described address.Therefore, described initialization delay is lower and be confirmable.
In the measurement pattern of sensor device, measurement operation can be carried out, wherein this is measured in when determining that the characterization data received comprises or represents the address distributing to corresponding sensor device by monitoring communication line, is wherein put on described communication line by advantage level when starting to measure.
According to an embodiment, in measurement pattern, send by communication line after completing measurement and comprise the address of distributing to next sensor device and the characterization data being received from activation sequence table.
In addition, in measurement pattern, the address containing distributing to next sensor device can repeatedly be sent, until the applying of advantage level is determined on communication line.
In addition, in the method for operation sensor arrangement, after initialize mode completes, measurement pattern can be carried out, advantage level is all applied on communication line by each sensor device wherein performing measurement, one wherein in described sensor device measure after, described in be that corresponding sensor device sends the characterization data represented according to the address of in the ensuing sensor device of the activation sequence relevant to order of occurrence.
After described initial method, each in described sensor device stores the address representing its position in for the activation sequence of multi-channel running.If a sensor device has completed it and measured circulation, then characterization signal can be sent on described communication line, and described characterization signal comprises the address of next sensor device in activation sequence.Described characterization signal by with send the respective sensor device that is associated of address receive.Then, dominant level puts on communication line by corresponding sensor device, to confirm to have received described characterization signal.Thus, corresponding sensor device is activated.
Preferably, it is total that all sensor device addresses of described sensor arrangement are all stored in each sensor device, based on losing the sensor device being noticed removing of sensor device in described sensor arrangement or non-functional by the confirmation applied given by described advantage level.Then, the sensor device sending described characterization signal can use next address or activation sequence, until the sensor device addressed confirms by applying described advantage level, and comes into effect the measurement of himself.
Again on the other hand, the invention provides a kind of sensor device of sensor arrangement, described sensor device comprises:
-for carrying out the measuring unit measured;
-for being coupled to the I/O driver of communication line, wherein said I/O driver is configured to level be put on the communication line sent for data, wherein said level comprises an advantage level and one or more advantage level, and wherein only described advantage level can cover the secondary advantage level put on described communication line; And
-communication control unit, it is configured to:
-use described advantage level and one or more advantage level, by described I/O driver, data are sent out continuously
Deliver on described communication line;
-for good and all monitor described communication line to detect level; And
-when advantage level be present in not yet by this sensor device itself effect described communication line on, interrupt
Described data send.
The present invention can provide, and in an initialize mode, described communication control unit is also configured to:
-identification data is sent on described communication line continuously, as the corresponding sequence of level, wherein said identification data represents sensor device uniquely, wherein especially, as long as not yet pass described communication line to send described identification data completely, then repeat the continuous transmission of described identification data on described communication line.
According to an embodiment, in an initialize mode, described communication control unit also can be configured to monitor when identification data sends completely distribute and store address at every turn, and stores distributed address especially together with the information of the order of occurrence about described communication line.
In a measurement pattern, described communication control unit also can be configured to measure, and when determining that the characterization data received starts when comprising the address distributing to sensor device to measure by monitoring communication line, wherein when starting to measure, advantage level is put on communication line.
In a measurement pattern, described communication control unit also can be configured to when completing measurement, the address comprising and distribute to next sensor device is sent and the characterization data received from activation sequence table by communication line, wherein repeatedly send the characterization data comprising the address distributing to next sensor device, until the applying of advantage level is determined on communication line.
Again on the other hand, the invention provides a kind of sensor arrangement, it comprises by the interconnective multiple the sensor device of common communications line.
Again on the other hand, the invention provides a kind of sensing system, it comprises the sensor arrangement and the control unit for receiving the measurement data obtained by the measuring unit of sensor device.
Accompanying drawing explanation
Some embodiments will be further described in more detail by reference to the accompanying drawings herein, wherein:
Fig. 1 shows the sensing system with the sensor arrangement comprising multiple sensor device;
Fig. 2 shows the schematic diagram of the sensor device of the sensing system of Fig. 1;
Fig. 3 shows the flow chart of the step of the machinery of consultation of the activation sequence of the sensor device described in multi-channel running; And
Fig. 4 shows to describe and makes activation be passed to the flow chart of the method for the next sensor device activation sequence from a sensor device.
Embodiment
Fig. 1 shows the illustrative sensors system 1 with such as three sensor devices 2, and sensor device 2 is arranged to a sensor arrangement 3, or is arranged in sensor array.Generally speaking, the quantity of the sensor device 2 in sensor arrangement 3 is optional for described embodiment.
Such as, sensor arrangement 3 can be a part for movable fixture such as robot, the parts etc. of automated manufacturing system.Sensor arrangement 3 can be configured to the existence of detecting distance and/or object in public sensing region 4.
Due to public sensing region 4 may because of too wide and can not cover by single sensor device 2, the sensor device 2 in sensor arrangement 3 is positioned such that their specific sensing range 5 is added up can form larger public sensing region 4.Because the sensing range 5 of individual sensor device 2 is usually taper, so the specific sensing range 5 of adding up needs overlapping to strengthen the coverage of public sensing region 4.
Sound can be utilized (such as the distance of Active measuring object and/or the sensor device 2 of existence, ultrasonic) or electromagnetic radiation (light) transmitter and corresponding receiver, such as, to detect the voice signal launched by object or propagation time of electromagnetic signal of reflecting or signal strength signal intensity, and to exist about object and/or the information of distance of object from being derived by it.
Generally speaking, sensor device can be applied based on the interactional cognition technology with object such as voice signal, electromagnetic signal.This voice signal or electromagnetic signal are launched by sensor device itself, and to make the kind based on sender device, by voice signal or electromagnetic signal, the coverage/directivity in sensor device determines the shape of this value scope 5 specific.
Due to the overlap of specific sensing range 5, when carrying out simultaneously, the perception of sensor device 2 can be disturbed, because such as, some in the signal launched by sensor device 2 can from reflections off objects to simultaneously also on the receiver of the different sensor device 2 carrying out measuring.This may cause inaccurate measurement result.Therefore, sensor device 2 in sensor arrangement 3 is the sequential activation according to multi-channel running normally.In other words, the sensor device 2 that may occur to disturb also one after the other is activated separately, does not disturb to make these measurements.
In fig. 2, an exemplary sensor device 2 is illustrated in greater detail.This sensor device 2 has ultrasonic transmitters 21 as sound transmitting element, and ultrasonic receiver 22 is as acoustic reception element.This device also has measuring unit 23, and it is connected with ultrasonic transmitters 21 and ultrasonic receiver 22, to measure.By transmission ultrasonic signal and such as by measuring object to be measured and carrying out this measurement from the propagation time transmitted of object to be measured during Measuring Time groove.The distance dependent of the object of this propagation and reflected ultrasonic.
Measurement result is provided to the control unit 6 be connected with all the sensors device 2.Control unit 6 collects all measurement results and performs suitable function, such as, evaluates measurement result.
In sensor device 2, also provide the communication control unit 24 determining Measuring Time groove.This Measuring Time groove represents the start time that corresponding sensor device 2 will be activated, and the end time that corresponding sensor device 2 will be deactivated.At the end of time slot in corresponding sensor device 2, in next sensor device 2, activate next Measuring Time groove.In order to make the generation synchronization of activation Measuring Time groove, provide the communication line 7 being coupled to each sensor device 2.Communication line 7 can be the individual wires be connected with each sensor device 2 by specific I/O driver 25.
I/O driver 25 is configured to, and when sending, sending data continuously, and being configured to, incoming level from communication line 7 with the form applying a series of level on communication line 7.If level is received by I/O driver 25, then I/O driver 25 is also configured to the signal received continuously to change into the data being sent to communication control unit 24.Preferably, the quantity of level is 2, sends continuously to make these data as binary signal; But, any amount of level can be used to send data by communication line 7.
Described level can be electric pressure, current class etc.In addition, described level can comprise an advantage level and one or more advantage level.I/O driver can be configured to cover by applying advantage level the secondary advantage level being put on the signal of telecommunication on communication line 7 by other sensor devices 2 one or more.That is, this change into Low ESR when applying advantage level and change into higher impedance when applying secondary advantage level by changing the impedance of I/O driver, easily realizing.
I/O driver 25 also can be configured to, if I/O driver 25 attempted secondary advantage level to be sent to communication line 7 and the advantage level that applied by another sensor device 2 of this advantage level cover, then stop immediately sending data to communication line 7 and therefore sending stop signal to control unit 24.
Below in an example, the continuous signal put on communication line 7 is made up of two level applied continuously, and wherein advantage level is logicality " 1 ", such as level high, and secondary advantage level is logicality " 0 ", such as low voltage level.But, " 0 " of logicality also can be selected as advantage level.
Memory cell 27 and communication control unit 24 couple.Memory cell 27 is configured to the address of the address and all the sensors device 2 that are assigned to respective sensor device 2 to be stored in memory location, with indicating device activation sequence.In addition, each sensor device 2 all has permanent memory 26, to maintain the exclusive identification code relevant to each sensor device 2.
Synchronous control unit 24 is configured to, and is received the association address of sensor device 2, Measuring Time groove is distributed to its corresponding measuring unit 23 according to whether by communication line 7, with this, activation is passed to addressed sensor device 2.
In order to carry out multiplexed operation (wherein at least one parts of sensor device 2 are by sequential activation), need the activation sequence of predetermined sensed apparatus 2.
In order to avoid manually pre-set sensor device activation sequence and in order to operate in the auto negotiation carrying out activation sequence between the sensor device 2 that is coupled to each other by communication line 7, be provided with initialize mode, wherein upon power-up, an initialization procedure is implemented by the communication control unit 24 of each sensor device 2.
The flow chart of composition graphs 3 can be described in greater detail in the initial method implemented in this initialize mode.This initial method realizes in the interaction of all the sensors device 2.Inter-process in synchro pick-up device 2, to carrying out timing by signal equal substantially.Especially, the continuous transmission on communication line 7 needs based on identical frequency, that is, identical transmission data rate.
Sensing system 1 power on make each sensor device 2 run after, in each sensor device 2, perform starting sequence in step sl.All the sensors device 2 is brought into complete operational mode by described starting sequence.
After start-up routine completes, verify startup in S2 after, whether the predetermined starting time reaches.Starting time is predetermined, and the start-up time of each sensor device 2 can be equal, to realize timing synchronization.If in step s 2, determine that the starting time not yet terminates, then circulate, until the starting time (alternative: yes) terminates to continue this initial method.
After the starting time terminates, the identification code be stored in permanent memory 26 is read by communication control unit 24, and is supplied to I/O driver 25 as identification data from this permanent memory 26.This identification data is corresponding with described identification code, or is generated by described identification code.Identification data is sent to communication line 7 by level by I/O driver 25 continuously.In other words, identification data is translated into the continuous signal with the level being read as " 1 " of logicality and " 0 " of logicality.Each in sensor device 2 can send identification data continuously according to identical data transfer rate.
During signal on communication line 7 sends (this starts in step s 4 which), monitor communication line 7 to fetch the identification data that it sends simultaneously.If in step s 5, the actual level on I/O driver determination communication line 7 is not mated with sent level (alternative: yes), then in step s 6, interrupt the process of transmitting started in step s3.Otherwise (alternative: no), verifies in the step s 7 and whether sends identification data completely.Because the identification data item of permanent storage in sensor device 2 all has identical length (by bit or figure place), each sensor device 2 all knows the transmission of the identification data item when stopping any sensor device 2.If can not send this identification data completely, then continue the method with step 5 (alternative: no), no person (alternative: yes) continues the method with step S8.
In step s 8, calculated address, makes address be associated with the identification data sent completely, and is stored in memory cell 27 address.The memory location of the address distributed represents the activation sequence of sensor device 2 to be determined.Therefore, about according to activation sequence, the information taking turns to the address of which other sensor device 2 can be obtained from the storage location of stored address.Such as, generated address is stored in follow-up memory location, to make the order of the address by storing in memory cell 27 to define the order of activation.Order other modes be held in memory cell 27 generated address are also possible.
Possible address allocation plan can to address from " 1 " (or any predetermined several quantity (counting) (or maximum quantity to x+ sensor device 2) x) counting down to the sensor device 2 coupled with communication line 7 at most (or the increment of address is 1,2 ... n).In other words, the address " 1 " that the first sensor device 2 that can send its identification data is completely assigned with, the address " 2 " that second sensor device 2 that can send its identification data is completely assigned with, etc.
Followed by step S8, verify in step s 9 and whether do not have other sensor devices 2 identification data item to be sent on communication line 7 in the given time.If determine not sent identification data item (alternative: yes) on the scheduled time, then stop this initialize process, and address is assigned with to all the sensors device 2.Otherwise (alternative: no), if received identification data item completely, then according to address above mentioned allocative decision to this identification data item allocation address, and address to be stored in memory cell 27 to obtain the address that generates for all the sensors device 2 in step s 8 and distribute and the order proceeded in step s 9 subsequently.
After the data of interrupt step S6 send, wait in step slo, until the identification data item of any sensor device 2 is fully transmitted all.
All the sensors device 2 all monitors communication line 7, such as, by communication control unit 24, makes them have all identification datas received of a sensor device 2 that can send its identification data completely.If determine that identification data receives (alternative: yes) completely in step slo, then the method proceeds together with step S11.
In step s 11, when the communication control unit 24 of sensor device 2 can not send the identification data of oneself completely, communication control unit 24 distributes newly-generated address to corresponding sensor device 2 according to address allocation plan, and the identification data wherein sent completely by communication line 7 has identified the identity of described sensor device 2.This address allocation plan is all identical for all the sensors device 2.Therefore, after sending identification data completely by another sensor device 2, all the sensors device 2 generates at every turn, distribute and store identical address, thus determines the position in the activation sequence of sensor device 2.
Then, the method proceeds step S3.
In step s 4 which, each sensor device 2 being not yet assigned with address starts to send its identification data all again.The sensor device 2 being assigned with address is only passive, treat in the circulation of step S8 and S9, on communication line 7, monitor/monitor other identification data item, and after often organizing the identification data sent completely, distribute the address will stored together with the information about activation sequence according to address allocation plan.The address distributed enters the activation sequence corresponding to the order that they generate automatically, that is, wherein sensor device 2 can send the order of their identification data completely by communication line 7.
To measure at two or more sensor devices 2 simultaneously, and other sensor devices 2 are by when carrying out subsequently measuring according to multi-channel running, the sensor device 2 simultaneously carrying out measuring can be equipped with equal identification data item, and therefore only advantage level is sent on communication line 7, that is, " 1 " of logicality.Because the transmission of identification data is synchronized, all sensor devices 2 with like-identified number will obtain identical address.
Fig. 4 shows the flow chart representing the step implemented in measurement pattern after this initial method terminates.
All the sensors device 2 has stored the address of the sensor device 2 representing activation sequence table in its corresponding memory cell 27, and described sequence list comprises the address carrying out addressing also instruction activation sequence further by this address to sensor device 2.
In the step s 21, check whether the address being pointed out as the first address in activation sequence table belongs to sensor device 2.If determine the identity (alternative: yes) of described first address designation sensor device 2, then proceed step S22; Otherwise (alternative: no) proceeds step S21.This operation starts from the sensor device 2 of the first address in the table of the expression activation sequence being assigned with storage.
In step S22, advantage level puts on communication line 7 by the sensor device 2 being assigned with the first address determined, thus indicating other sensor devices 2: the sensor device 2 determined is activated to measure, and other sensor devices 2 all should be deactivated simultaneously.
Measure in step S23.Measurement result can be sent out.
After measurement terminates, in step s 24 which, communication control unit 24 provides characterization signal, and is sent by communication line 7 by this characterization signal, and this characterization signal is with comprising the data of the address of sensor device 2 of next will carry out measuring according to the activation sequence table stored in memory cell 27.
Because all the sensors device 2 is all monitored on communication line 7, so be assigned with the sensor device 2 sending address to take over control, and put on communication line 7 by advantage level, thus every other sensor device 2 is stoped to send their characterization signal.
Therefore, in step s 25, wait detects the advantage level put on communication line 7.If detect that (alternative: yes) puts on the advantage level of communication line 7, then stop the transmission of characterization signal in step 26.Otherwise (alternative: no) proceeds step 27.
In step S28 after step S26, carry out monitoring (monitoring communication line 7) at communication line 7.If the characterization signal comprising self detected, then proceed step S22 by applying advantage level.Otherwise, its proceed step S28 with formed etc. to be recycled.
Verify the predetermined stand-by period in step s 27 and whether terminate.If (alternative: yes), then from activation sequence table, again obtain ensuing address, and in step S29, generate corresponding characterization signal.By the method proceeding step S24, this characterization signal is sent on holding wire 7.If the predetermined stand-by period not yet terminates, then get back to step S25.
Therefore, characterization signal is sent by the sensor device 2 be temporarily activated, and confirms this address at the sensor device 2 being himself address by the address designation in sign by " 1 " of logicality being put on communication line 7 as advantage level.By this mode, the further transmission of characterization signal is blocked, and this round is submitted to the sensor device 2 carrying out confirming.Therefore, the sensor device 2 that its address is corresponding with the address that characterization signal sends becomes movable sensor device 2.
One or more generations in sensor device 2 were lost efficacy, this inefficacy of activation change tolerable between sensor device 2.If the characterization signal of sensor device 2 transmission does not obtain the confirmation of at least one other device 2, then detect that corresponding sensor device 2 is unavailable by losing confirmation in the given time.Then the sensor device 2 having sent characterization signal keeps activating, and is responsible for another characterization signal sending the ensuing address comprised in activation sequence table, until the sensor device 2 addressed confirms, and transmits activation as described above.
If another sensor device 2 is added into existing sensor array 3, and in sensor array 3, during initialize mode, wherein having carried out address negotiation, then the new sensor device 2 added can be configured to by constant advantage level is put on transmission communication line 7 interrupting characterization signal.Owing to not holding consultation, thus can identify by each sensor device 2, and as respond, all the sensors device 2 will start reset, therefore will with synchronized mode from carry out initialize process.
Reference numeral
1 sensing system
2 sensor devices
21 transmitters
22 receivers
23 measuring units
24 communication control units
25I/O driver
26 permanent memories
27 memory cell
3 sensor arrangement
4 public sensing regions
5 sensing ranges
6 control units
7 communication lines.
Claims (15)
1. a method for operation one sensor device (2) in the sensor arrangement (3) containing multiple transducer, described multiple transducer is interconnected by common communications line (7), said method comprising the steps of:
-on described communication line (7), send (S4) data continuously, sequence wherein by applying level sends data on described communication line (7), wherein said level comprises an advantage level and one or more advantage level, and on wherein said communication line (7), only the applying of described advantage level can cover time advantage level;
-monitoring (S5) described communication line (7); And
-when there is advantage level on the described communication line (7) not yet acted on by this sensor device (2), interrupt the transmission of (S6) described data and/or stop the transmission of described data.
2. method according to claim 1, wherein, in initialize mode, send the identification data of the corresponding sequence as described level on described communication line (7) continuously, wherein said identification data identifies described sensor device (2) uniquely.
3. method according to claim 2, wherein, as long as be not yet fully transmitted at the upper described identification data of described communication line (7), then repeat the step sending (S4) identification data on described communication line (7) continuously.
4. method according to claim 3, wherein, in described initialize mode, monitor the transmission completely of each identification data, distribute and store (S11) address, especially, store together with the information relevant to the upper order of occurrence of described communication line (7), and/or
Wherein, in described initialize mode, if do not monitor the transmission of identification data in the given time on described communication line (7), then stop described initialize mode, and start measurement pattern.
5. method according to any one of claim 1 to 4, in measurement pattern, wherein perform measurement (S23), wherein said measure in time determining that the characterization data received comprises the address distributing to described sensor device (2) by the described communication line of monitoring (7), wherein when starting described measurement, at the upper applying advantage level of described communication line (7).
6. method according to claim 5, wherein, in described measurement pattern, after measurement completes, send (S24) characterization data at described communication line (7), described characterization data contains the address distributing to next sensor device (2) also can be given for change from activation sequence table.
7. method according to claim 6, wherein, in described measurement pattern, sends the characterization data containing the address distributing to next sensor device (2) repeatedly, until determine described communication line (7) is applied with advantage level.
8. the method for the sensor arrangement (3) of an operation containing multiple sensor device (2), described sensor device (2) is interconnected by common communications line (7), each in wherein said sensor device (2):
-on described communication line (7), send (S4) data continuously, sequence wherein by applying level sends data on described communication line (2), wherein said level comprises an advantage level and one or more advantage level, and wherein on described communication line (7), only described advantage level can cover time advantage level;
-monitoring (S5) described communication line (7); And
-when there is advantage level on the described communication line (2) not yet acted on by this sensor device (2), interrupt the transmission of (S6) described data and/or stop the transmission of described data.
9. method according to claim 8, wherein, in all sensor devices (2), on the predetermined starting time particularly after described sensor arrangement (3) is powered, start initialize mode simultaneously, wherein each sensor device (2) all starts to send identification data continuously in continuous print time frame, in each wherein in described transducer (2), by an address assignment generated by public address allocative decision to sending the one or more of their respective identification datas completely in described sensor device (2), the address wherein distributed together with to during described initialize mode in the relevant information of order of occurrence store.
10. method according to claim 9, wherein, after described initialize mode completes, enter measurement pattern, advantage level all puts on described communication line (7) by each sensor device (2) wherein performing measurement, one wherein in described sensor device (2) measure after, this sensor device (2), according to the activation sequence relevant to order of occurrence, send the characterization data of the address of shown in next sensor device (2).
The sensor device (2) of 11. sensor arrangement (3), described sensor device (2) comprises:
-for carrying out the measuring unit (23) measured;
-for being coupled to the I/O driver (25) of communication line (7), wherein said I/O (25) driver is configured to level to put on described order wire (7) and sends, wherein said level comprises an advantage level and one or more advantage level, and wherein only the applying of advantage level can cover the secondary advantage level be applied on described communication line (7); And
-communication control unit (24), is configured to:
-send data to described communication line (7) continuously by described I/O driver (25);
-monitor described communication line (7); And
-when there is advantage level on the described communication line (7) not yet acted on by this sensor device (2), interrupt the transmission of described data and/or block the transmission of described data.
12. sensor devices according to claim 11 (2), wherein, in initialize mode, described communication control unit (24) is also configured to:
-send continuously on identification data to described communication line (7), as the corresponding sequence of level, wherein said identification data identifies described sensor device (2) uniquely, wherein especially, as long as be not yet fully transmitted at the upper described identification data of described communication line (7), then repeat the continuous transmission of described identification data on communication line (7).
13. according to claim 11 to the sensor device (2) according to any one of 12, wherein, in measurement pattern, described communication control unit (24) is also configured to measure, and start described measurement when determining that the characterization data received contains the address distributing to described sensor device (2) by the described communication line of monitoring (7), wherein when starting described measurement, described advantage level is applied on described communication line (7).
14. sensor arrangement (3), comprise according to claim 11 to the multiple sensor devices (2) according to any one of 13, described multiple sensor device (2) is connected to each other by common communications line (7).
15. sensing systems (1), comprise sensor arrangement according to claim 14 (3) and control unit (6), wherein said control unit (6) is for receiving the measurement data obtained by the measuring unit (23) of sensor device (2).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| EP14191543.9 | 2014-11-03 | ||
| EP14191543.9A EP3016351B1 (en) | 2014-11-03 | 2014-11-03 | Method for operating a sensor arrangement with multiple sensor devices, sensor device, sensor arrangement and sensor system |
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| CN105577845A true CN105577845A (en) | 2016-05-11 |
| CN105577845B CN105577845B (en) | 2020-01-17 |
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| CN (1) | CN105577845B (en) |
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| CN110990304A (en) * | 2019-11-29 | 2020-04-10 | 北京明略软件系统有限公司 | Processing method and device of sensing equipment, storage medium and electronic device |
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| CN106703832A (en) * | 2017-01-23 | 2017-05-24 | 上海市地下空间设计研究总院有限公司 | Intelligent shield tunnel segment |
| CN106761936A (en) * | 2017-01-23 | 2017-05-31 | 上海市地下空间设计研究总院有限公司 | A kind of tunnel O＆M health monitoring systems based on intelligent tunnel duct piece |
| DE102019125493A1 (en) * | 2019-09-23 | 2021-03-25 | Infineon Technologies Ag | Slave device, bus system and method |
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| CN105577845B (en) | 2020-01-17 |
| EP3016351B1 (en) | 2018-03-07 |
| EP3016351A1 (en) | 2016-05-04 |
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